力を盗む [chikara o nusumu] or 'steal strength' in Japanese. Can also be translated as 'steal power'.
Record Keeper

Type: Thief, Rarity: ★★★★, Uses: 2-10
Target: single, Element: -
Use: Tyro, Balthier, Bartz, Edge, Faris, Locke, Rikku, Vaan, Yuffie, Zidane, Thief
Generate: Strength Orb (Large) x5, Flame Orb (Large) x3, Wind Orb (Large) x3, 12,000 gil
Hone (lv2): Strength Orb (Large) x10, Flame Orb (Large) x6, Wind Orb (Large) x6, 60,000 gil
Hone (lv3): Strength Orb (Large) x20, Flame Orb (Large) x12, Wind Orb (Large) x12, 120,000 gil
Hone (lv4): Strength Orb (Large) x30, Flame Orb (Large) x18, Wind Orb (Large) x18, 300,000 gil
Hone (lv5): Strength Orb (Large) x50, Flame Orb (Large) x30, Wind Orb (Large) x30, 600,000 gil
Description: Lowers target's ATK and raises your own
Category: Ability